Terminal clamp



June 3 1924.

O. C. ROHDE TERMINAL CLAMP Original Filed Oct. 4, 1920 1,4 6,159 UNITED STATES PATENT OFFICE.

or'roc. manner ronnno, onro, ASSIGNOB, '10 cmmron arm PLUG oomrmr, 1 orronnno, one, A com-cannon or DELAWARE. 7 i

mammal. cam. Continuation of application Serial No. 414,478, Med Octoher 4, 1920. This application filed January 84,

. 1921. Serial llo. 489,424.-

To all whom it may concern: ering 2 of the insulating material, 3 a spark Be it known that I O'rro C. ROHDE, a plug, and 4 a terminal stud on the outer end citizen of the United S tates, and a resident of the central electrode of the spark plug, of Toledo, Lucas County, and State of Ohio, the stud in the, present instance being ta- 5 have i made an Invention A pertaining to pered at its outer end and having a circumto Terminal Clamps; and I do ereby dec are ereutial groove 5. the following to, be a full, clear, and exact The termlnal clamp embodying the predescription of the invention, such as will enfer-red form of the invention comprises a able others skilled in the art to which it apferrule member 6, which is in the form of a pertains to make and use the same, refersocket to ada pt 1t to be slipped over an end on ence'being had to theaccompan ing drawof the wire 1nsulat1on 2 and hasits closed ings, and to the characters 0 reference end provided with a central a erture 7 marked thereon, which form a part of this through which the terminal end 0 the wire ifi ti 1 may project, beyond the insulating ma- 1 This invention relates to terminal clamps terlal, such wire end bem soldered or other- 70 for electrical conductors, and is intended wise mtimately connecte with the ferrule particularly-for use in connection with the to form a erfect electrical connection lead wires of s ark plugs. therewlth. e side wall of the ferrule The object o m invention is the provimember 6 is longitudinally slotted at insion of a simple an inexpensive clamp of the 'tervals to form the sides of the ferrule with 76 class described, which is adapted to be easily a plurality of spring fingers for yieldin enand securely connected in a permanent mangagement with the wire insulation and avner to a cable or wire end and to form a mg their free ends turned outward to a socket ca able of releasable yielding engagesll ghlt extent, as shown at 8.

ment wit a terminal stud in a simple and e outer member of the clamp has a 80 eflicient manner. tubular end or body portion 9, which is lon- The invention is fully described in the folgitudinally split at one side, as at 10, to perlowing specification, and while, in its mlt a spring contraction or expansion of broader aspect, it is capable of embodiment the member, and the socket of this member 3 in numerous forms, a preferred embodi is of a size adaptmgit to snugly receive the ment thereof is illustrated in the accomferrule member 6. The body portion 9 is panying drawings, in which, slightly longer than the ferrule 6 and pro- Figure 1 is an elevation of the terminal ylded near its outer end with an annular clamp member embodying the invention opinternal recess 11 with which the outwardly 35 eratively connecting a spark plug and lead turned ends 8 of the ferrule member may wire. Fig. 2 is an enlarged central longispring when in register therewith. The tudinal section of the clamp with the conmember 9 has its outer end contracted to nected wire and terminal stud in full. Figs. form an annular shoulder 12 to limit the in- 3, and 4 are different views of one member sertion of the ferrule member 6 therein and 40 of the clamp. Figs. 5 and 6 are different also to form a restricted socket portion 13 views of the other member of the clamp. for receiving the outer end of the terminal Fig. 7 is an enlar ed central longitudinal stud 4, the socket being of asize for the section similar to 1g. 2 in a slight y modistud to snugly fit therein. The tubular porfied form of the clamp, and Figs. 8 and 9 tion 13 is longitudinally slit throughout its 45 are different views of the two members of length, as shown at 14, to divide such por- 1 this modified form of the clamp. tion into two relativel ieldable segmental This application includes, as Fi 7, 8 leg portions. Each 0 t ese leg portions is and 9 thereof, the form of termina clamp provided with an inwardly pro ecting decontained in m application filed October 4, pression or detent 13' disposed in trans- 1920, Serial 0. 414,478, and is therefore, veres'ely aligned relation and adapted to I filed as a continuation of said former applienter the groove 5 of the stud 4 to yieldingly cation as to so much of the matter as is retain the terminal clamp and stud in ascommon both. sembled relation when the stud isjnserted Referring to the drawings, 1 designates into the socket. I

u a conductor wire having the customary cov- In the form of the invention illustrated in i Fig. 7, 8 and 9, the recess 11 is omitted from the outer body member of the clamp and the terminal ends of the inner terminal member 6' are left straight instead of being turned outwardly, as shown in Fig. 3. In this case the clam is secured to the wire insulation by turning the free edge of the body member, designated 9, in around the adjacent end edges of the ferrule member 6 to the wire insulation and also to force the ends of the ferrule fingers into holding e ent therewith.

It is evident that I have provided a simple and eflicient terminal clamp which is ca able of being plie to the end 0 a lead wire and which is also capable of being releasahly engaged with the terminal stud ornut.

I wish it understood that my'inve'ntion isnot limited to any s cific construction, erran ment or form 0 the Earts, as it is capab e of numerous modi cations and chan other than those illustrated, without e ing from the spirit of the claim.

Having thus described my invention, what easily and qu cldy ap- Igclaim as new, and desire tosecure by Letters Patent, is,--

4 terminal clam including a tubular cyl ndrical body, su tantially one half of which is of reduced diameter to form an internal shoulder between the ends of the body, a ferrule received over an end of a term nal w re and having a closed end and provided with axial slits extendin through the opposlte end of the ferrule, t e lar r diametered part of the cylindrical bod mg engaged over the ferrule with the 0 used end of the latter abutting said shoulder, and having an 'aaial slit and its free end formed to engage with the free end ortions of the ferru e, the part of the ha y of reduced diameter having a pair of diametrically opposed aaial shtsto form apair of legs of substantially seml-circular cross-section, and each of the legs having an inwardly extending detent.

In testimony whereof, I have hereunto signed my name to this specification.

OTTO C. ROHDE. 

